MESON Chess Problem Database

Problem Display
PID: 112407 (8/1B6/8/8/kp1K4/1p6/P7/4Q3 w - - 0 1)

Sabol, Frantisek

Hlas l'udu, 1983

8/1B6/8/8/kp1K4/1p6/P7/4Q3

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kc4?
      • threat
        • 2.Qxb4#
      • 1...Ka5
        • 2.Qxb4#
      • 1...Ka3!
    • 1.Kc5?
      • threat
        • 2.Qxb4#
      • 1...Ka5
        • 2.Qxb4#
      • 1...Ka3!
    • 1.Qe6?
      • threat
        • 2.Qa6#
      • 1...Ka3
        • 2.Qxb3#
      • 1...Ka5
        • 2.Qa6#
      • 1...Kb5
        • 2.Qa6#
      • 1...bxa2!
  • Keys
    • 1.a3!
      • threat
        • 2.Qxb4#
      • 1...Kxa3
        • 2.Qa1#
      • 1...Ka5
        • 2.Qxb4#
      • 1...Kb5
        • 2.Qxb4#
      • 1...bxa3
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAB1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • K(C);S_FLIGHT
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAB1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(a)
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);XP(B)
  • Actual
    • P(B);
    • Threat
      • QAR1(A),XP(c)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(B)::QAR2(A)
      • K(b);P-FLIGHT,P_SPINP(c)::QAB1(A),XP(c)
      • K(b);S_FLIGHT::QAR1(A),XP(c)
      • P(c);SBLOCK,XP(B)::B(D)
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